| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor that achieves high torque even while suppressing a torque ripple low. <P>SOLUTION: The motor is provided with a stator 3 formed by toroidally winding a winding 6 around an annular yoke 5, and a permanent magnet (first-third magnets 11-13) facing the stator 3. The permanent magnet includes the first magnet 11 arranged so as to face the inner peripheral face of the stator 3, the second magnet 12 arranged so as to face the outer peripheral face of the stator 3, and the third magnet 13 arranged so as to face the axial end part of the stator 3. The third magnet 13 in the first/second/third magnets 11-13 is arranged (so as to be deviated by an angle θ) such that the position of its circumferential magnetic-pole center L2 differs from that of the other magnetic-pole center (the magnetic-pole center L1 of the first/second magnets 11, 12). <P>COPYRIGHT: (C)2010,JPO&INPIT |
